Whether you’re a seasoned pro at Getting Things Done, or you are just starting out, 43 Folders is a one-stop shop for all kinds of interesting and new concepts that will help you get through all of your “stuff”.
While the programs discussed lean heavily toward the Mac OS X crowd, there are many useful online and cross-platform utilities discussed in detail.
If you are just starting out with GTD, be sure to check out their “Getting Started with ‘Getting Things Done'” article. This article allows you to assess whether or not the program will be right for you from the start, before the need to buy any of the related materials. I highly suggest this guide, as well as all of the other interesting posts hosted on the site.